Gate-actuating mechanism for elevators.



G. W. CARR.

GATE AGTUATING MECHANISM FOR ELEVATORS.

APPLICATION FILED OUT. 24. 1913.

Patented Dec. 1, 1914.

' 3 SHEETS-SHEET 1 Inventor Witnesses mrgz Attorneys rm- NURRI I'ETLRS c0 1 PHOTO LITHO WASH G. W. CARR. v GATE AGTUATING MECHANISM FOR ELEVATORS.

Inventor 3 SHEETSSHEET 2.

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Patented Dec. 1

'wiya APPLICATION FILED 001224. 1913.

O Attorneys H5; NORRIS PETERS Co. PHOTU-LITHQ, WASHINGYUN. n. C

G. W. CARR.

GATE AG'IUATING MECHANISM FOR ELEVATORS.

APPLIGATION FILED OUT. 24. 1913.

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omen srarns ra'rnnr o are -GEORGE W. CARE, OF OSC'EOLA, PENNSYLVANIAL To all "whom it may concern:

Be it known that I, GEORGE W. CARR, a citizen. of the United States, residing at Osceola, in the county of Tioga and State of Pennsylvania,have invented a new and useful Gate-Actuating'Mechanism for Idlevators, of which the following isfa specification. y "Th e present'invention relates to improvements in gate actuating, mechanisms forelevators, one object of the invention, being the provision of a novel mechanism by means of which a gravity closed gate or door is opened by the car or cageas it approaches from either direction the next succeedingfloor, the car or cageafter moving a certain distance beyond the floor permitting the release of the door or gate and its movement due to gravity to closed position.

'A further object of the present invention is the provision of novel trip actuating means, said means being located in the path of the car or cage, and means carried by the car or cage, which engage to move the trip a predetermined distance to cause the opening of the gate or door upon the approach of the car or cage during the ascent or descent thereof, such trip actuated means during the movement of the car or cage by the floor in either direction recedingaway and automatically releasing itself from the device carried by the carto permit the door or gate to close by gravity.

WVith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention (herein disclosed can be made within the scope of what is claimed without departing from the spirit-of, the invention.

In thedrawings F gure-.1: is at front elevation of an elevator shaft constructed aocording' to a and I embodying the present 111- vention. Fig. 2 is a view taken attright angles thereto, Fig. 3 is a diagrammatic perspective view of the shaft carried mechanism connected to the gate or door. Fig. 4: is a perspective view of the guiding and releasing means for the shaft carried door or gate actuating mechanism. Fig. 5 is a perspective view of the two trips carried by the elevator car or cage. Fig. 6 is a plan View GATE-ACTUATING MECHANISM non ELEVA ORS."

Specification of Letters Patent. ,Patgntgfl Dec, 1, 1914:, Application filed October 24, 1913. Serial No. 797,091.

showing the present application to a vertically movable gravity closed gate.

Referring to the drawings, the numeral 1' designates a shaft, which has mounted therein for ascent and descent, the car or cage 2, which is controlled by the hoisting cable 3, these features being merely indicative of any form of elevator and shaft and operatthedescent of the car and permitted move ment in the opposite direction to render the door actuating means inactive.

As the gate or door at each floor of the shaft is provided with the same mechanism, the description of one will suffice for all, the peculiar arrangement being diagrammatically shown in Fig.3, and consisting ofa cable 6 which has mounted upon one-end or terminal, the weight'7. This cable is directed to'pass over a pulley 8, and under and over the pulley 9 and extends vertically upward through the ch'annelmember 20 connected to the shaft adjacent thedoor or gate to be actuated-over the upper pulley 10 and down again paralleling the last train thereof, to the lowermost pulley 11, the train then being extendedupwardly and to the verti-' Cally disposed pulley 12. The cable 6' is there connected as at 13 to the two branch cables (7-6 which extend in opposite directions over the 1 L14T to the oppositely disposedpulleys 15 15, Here these two cables 6 6 are extended forwardlyand over the-two vertical pulleys 18-18, the weights 19-49 being connected to the; free terminals of such pcables: Thecables 66- at the point before they pass. over the pulleys 18-18 are connectedto the hangers 16l6 of the two horizontally disposed doors or gates 1717',

thusrendering it possible to operate two gates or doorsat opposite sides of the shaft simultaneously. It is apparent that a singlev cable 6 mav be employed to operate a single door 17. This door'l7, as clearly shown in two horizontal pulleys Fig. 1, has its hangers 16 and 16' mounted upon the inclined track 17, so that when said door is released it will be closed by gravity assisted by the weight 19.

'lhe casing member 20 constitutes a guide as before stated for the vertical portions of the cable 6 and disposed upon this cable 6 intermediate of the respective pulleys 9 and 10, and 10 and ll are the blocks 21 and 22, the block 21 constituting the means whereby the cable 6 is actuated to be pulled upon to open the gates 17-17 during the ascent of the car or cage 2, while the block 22 is operated to open the gate or doors upon the descent of the car or gate.

As clearly shown in Figs. 2 and 4c, the gate actuating block 21 is adapted to slide in the receptacle 26 of the channel 20 and upon the guide 23, said guide being provided with the reduced or inclined upper end 2 l, so that as the car or cage leaves the floor at which the gate or door is opened upon its ascent, the engagement of the trip (l with the block 21 will carry the same up- .vardly and cause the same to ride oft of the guide down the inclined end 2-l and out oi? the path of the free end of the trip 4, the block: 21 thus being automatically released from the trip 3: so that the gate may be operated by the weights 19l9. By this means, the gate is permitted to automatically close alter the car leaves the floor.

'lhe partition 25 divides the channel 20 into two chambers 26 and 27, the chamber 27 being provided with the guide 28, haw ingits lower end inclined at 29, the guide 28 being adapted to guide the block 22 in its descent during the actuation thereof by the trip 5 during the descent of the car. Thus it will be seen that as the car approaches the floor, in its descent, the trip 5 will engage the block and pull down thereupon, so as to actuate the cable 6 in the same direction as when the block 21 is elevated due to the engagement of the trip 4- during the ascent ot the car. Thus with this structure, as the ear approaches the floor, the block is in a position upon the guide 28 to be engaged and moved with tl e trip 5 to open the doors or gates controlled thereby the continued movement of the car below the floor causing the block 22 to ride upon the guide 28 and the inclined end 29 thereof at which time the same moves outwardly Copies of this patent may be obtained for and is released from the free end of the trip 5 to permit the gates or doors to close by gravity. It will thus be seen that by the peculiar arrangement of the cable 6 and the pulley 15*, both terminals beyond this point being connected to the main cable 6 (not shown) but as heretofore illustrated in connection with a horizontally movable door or gate. The gate 30 in this instance dispenses with the weight or weights 19.

What is claimed is:

The combination with an elevator shaft, a car and a gate for the shaft, of mechanism for actuating the gate, including two oppositely movable pivoted trips carried by the ar, av cable operably connected to the gate, two superposed pulleys about which the said cable passes, two trip actuated blocks attached to the respective strands of the cable between the pulleys for consonant movement in opposite directions, one block being disposed to be engaged by one trip as the car moves in one direction and the other is engaged by the other trip as the car is moved in the opposite direction, a race-way disposed adjacent to the blocks, and two projections carried by said raceway for en gaging the blocks to hold them in the path of the respective trips during the movement of the car, and whereby said blocks when moved are placed out of disengagement with the respective trips to release the gate as the car proceeds in either direction from a landing.

In testimony that I claim the foregoing as my own, I have hereto al'lixed my signature in the presence of two witnesses.

GEORGE VJ. CARR. Witnesses C. A. DEWEY, G. E. BnLcrInn.

five cents each. by addressing the Commissioner of Yatents, Washington, D. G." i 

